Which of the following statements concerning saliva is FALSE?
a. Saliva moistens food.
b. Saliva is secreted by three pairs of salivary glands.
c. Saliva dissolves food so it can be tasted.
d. Saliva starts the enzymatic digestion of lipids.
e. Saliva starts the enzymatic digestion of starch.
d
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When bacteria flourish and grow in the blood stream, the condition is termed ________.
A. viremia B. fungemia C. sepsis D. bactocarditis
Under what circumstances would a molecular geneticist need to use a bacterial artificial chromosome (BAC)?
A. when cloning small, prokaryotic genomes B. when cloning small, eukaryotic genomes C. when cloning large, eukaryotic genomes D. when the DNA inserts to be used for cloning are very small E. when sequencing small proteins
There are nine coat colors known in foxes. If a red fox were crossed with a double-black fox, all the
hybrids would be red above and black below in a pattern known as blended cross. If two blended crosses were mated, the F2 ratio would be as follows: 1 red, 2 smoky red, 2 cross red, 4 blended cross, 1 standard silver, 2 substandard silver, 1 Alaskan silver, 2 sub-Alaskan silver, and 1 double black. (a) Using the letters A/a and B/b to serve as the genes for these animals, develop a genotype for each variety listed. (b) Two crosses will produce all blended-cross offspring. One is used above (red fox ? double black); what is the other? (c) List the genotype and phenotype of all the pure-breeding foxes. (d) Give the genotypic and phenotypic ratio of a cross between two substandard silvers. (e) Give the genotype and phenotype of the offspring produced in a cross of a sub-Alaskan silver Observing Patterns in Inherited Traits 119 and a cross red What will be an ideal response?
The use of which commonly employed medication may lead to the development of a vaginal yeast
infection? a. aspirin b. pain relievers c. decongestants d. antibiotics e. antacids